Which of the following best explains why cos(2pi/3) doesnt equal cos(5pi/3) 1. The angles do not have the same reference angle. 2. Cosine is negative in the second quadrant and positive in the fourth quadrant 3. Cosine is positive in the second quadrant and negative in the fourth quadrant 4. The angles do not have the same reference angle or the same sign.

Three students, javier, sam, and corrine, participated in a fundraiser where people donated a certain amount of money per lap that the student ran. each student also had some initial donations that were collected before the run. the equations that represent each student's total donation, y, based on the number of laps ran, x, is shown below. match each equation with the correct rate of change for that student.